In 8Rack with m15's Waste Not, you turn 2 Waste Not, then T3 {Liliana of the Veil}, have them discard a card. If it's a land, Waste Not triggers and you get {B}{B} into your pool, which you spend on {Hymn to Tourach}. If they discard another land, you could Tourach them again, and could potentially destroy their entire hand T3
Theyd have to be reaaaallly dumb i think.. But hey maybe youll get lucky!
This is why Waste Not would actually be TOO good at 1 CMC: play it turn 1 to potentially chain Hymns on turn 2. So, they bump it up to 2 CMC and make it much less playable.
What does it do?
Waste Not
{1}{B} Enchantment
Whenever an opponent discards a creature card, put a 2/2 black zombie creature token onto the battlefield.
Whenever an opponent discards a land card, add {B}{B} to your mana pool.
Whenever an opponent discards a noncreature, nonland card, draw a card.
Well that's just great. When my play group finds out about this I'll have to overflow my deck with counters to combat the storm of {Mind Rot}s coming at me.
And it was designed by Magic players!!! I helped out with it